GrimmSpeed Master Cylinder Brace - Subaru Models (inc. 2002-2007 WRX/STi)

Firmer Pedal, Less Flex — The GrimmSpeed Master Cylinder Brace for the Legacy/Forester The GrimmSpeed Master Cylinder Brace for the 1994-1999 Subaru Legacy / 2003-2008 Subaru Forester adds a brace between the brake master cylinder and the firewall or adjacent chassis structure, reducing the flex that the master cylinder experiences under hard braking. On stock Subaru platforms, the master cylinder mounting allows a small amount of movement under high brake pedal loads — this flex translates to a soft or inconsistent pedal feel that diminishes braking confidence, particularly during track use or aggressive street driving. The GrimmSpeed brace eliminates that flex at the source. Why Master Cylinder Flex Affects Pedal Feel The brake pedal feel on the Legacy/Forester is influenced by more than just brake fluid compressibility. The master cylinder itself can flex slightly relative to the firewall under high pedal loads — this movement is absorbed as lost pedal travel before pressure builds in the hydraulic circuit. The GrimmSpeed brace adds a rigid connection that prevents this movement, so pedal force translates directly to hydraulic pressure rather than partially into chassis flex. The result is a firmer, more consistent pedal feel throughout the braking range. Bolt-In Installation — No Modification to Master Cylinder or Firewall The GrimmSpeed master cylinder brace bolts to existing mounting points in the Legacy/Forester engine bay — no drilling, no modification to the master cylinder, brake lines, or firewall. Installation is accessible from the engine bay and requires only basic hand tools. The brace is finished to resist corrosion in the engine bay environment. Key Features Platform: 1994-1999 Subaru Legacy / 2003-2008 Subaru Forester Braces brake master cylinder against firewall flex Improves pedal firmness and consistency under hard braking Eliminates master cylinder movement under high pedal loads Bolt-in at existing engine bay mounting points — no drilling required No modification to master cylinder, brake lines, or firewall Fitment Notes Platform: 1994-1999 Subaru Legacy / 2003-2008 Subaru Forester Bolt-in — no modification to chassis or brake components Professional installation recommended if unfamiliar with brake system components Straight From Subispeed The GrimmSpeed master cylinder brace is the brake upgrade that most Legacy/Forester owners don't know they need until they drive with one installed. The pedal improvement isn't dramatic — it's a firmer, more consistent feel under hard application — but once you've experienced it, the stock flex is immediately noticeable when you remove it. For any Legacy/Forester used on track or driven hard on the street, this is a correct and inexpensive upgrade. What's Included GrimmSpeed Master Cylinder Brace Mounting hardware About GrimmSpeed GrimmSpeed is a Pacific Northwest-based performance parts manufacturer that has been building Subaru-specific hardware since 2003. Founded by engineers who were actively building and racing Subarus themselves, GrimmSpeed's catalog reflects the priorities of people who use the products they make — turbo inlets, downpipes, uppipes, boost controllers, intercoolers, and engine bay accessories designed specifically for the EJ and FA-series Subaru platforms. Every GrimmSpeed product is engineered, tested, and refined in-house, and their focus on Subaru means the fitment and function reflect a deep understanding of the specific platforms they cover. Subispeed carries the full GrimmSpeed catalog because their approach to product development consistently produces parts that perform as advertised and fit correctly out of the box. Year Make Model Notes 2006 Subaru B9 Tribeca Base 2006 Subaru B9 Tribeca Limited 2008 Subaru Forester Sports 2.5 X 2008 Subaru Forester Sports 2.5 XT 2003-2009 Subaru Forester X 2006-2008 Subaru Forester X L.L. Bean Edition 2009 Subaru Forester X Limited 2009 Subaru Forester X Premium 2003-2005 Subaru Forester XS 2005 Subaru Forester XS L.L. Bean Edition 2004-2005,2009 Subaru Forester XT 2006-2009 Subaru Forester XT Limited 2005 Subaru Forester XT Premium 2006-2007 Subaru Impreza 2.5i 1993-1995 Subaru Impreza Base 1996-1997 Subaru Impreza Brighton 1993-2001 Subaru Impreza L 1993-1994 Subaru Impreza LS 1995-1996 Subaru Impreza LX 1995-2004 Subaru Impreza Outback 2005-2007 Subaru Impreza Outback Sport 1998-2005 Subaru Impreza RS 2002-2004 Subaru Impreza TS 2002-2007 Subaru Impreza WRX 2006-2007 Subaru Impreza WRX Limited 2004-2007 Subaru Impreza WRX STI 2007 Subaru Impreza WRX STI Limited 2006-2007 Subaru Impreza WRX TR 1994 Subaru Legacy Alpine Sport 1995 Subaru Legacy Base 1995-1999 Subaru Legacy Brighton 1994,1996-1999 Subaru Legacy GT 1998 Subaru Legacy GT Limited 1994-1999 Subaru Legacy L 1999 Subaru Legacy L 30th Anniversary 1999 Subaru Legacy Limited 30th Anniversary 1994-1996 Subaru Legacy LS 1994-1997 Subaru Legacy LSi 1995-1999 Subaru Legacy Outback 1997,1999 Subaru Legacy Outback Limited 1994 Subaru Legacy Outdoor 1995-1998 Subaru Legacy Postal 1994 Subaru Legacy Sport 1994 Subaru Legacy Sun Sport 1999 Subaru Legacy SUS 30th Anniversary 1994 Subaru Legacy Touring